diff --git a/kloppy/infra/serializers/code/sportscode.py b/kloppy/infra/serializers/code/sportscode.py
index c4ccb8c10..f259bd7f3 100644
--- a/kloppy/infra/serializers/code/sportscode.py
+++ b/kloppy/infra/serializers/code/sportscode.py
@@ -121,21 +121,31 @@ def serialize(self, dataset: CodeDataset) -> bytes:
             code_.text = code.code
 
             for group, text in code.labels.items():
-                # Labels can be in two formats:
-                # {"name": "value"} or {"name": True}
-                label = etree.SubElement(instance, "label")
-                if isinstance(text, bool):
+                # Labels can be in three formats:
+                # {"name": "value"} or {"name": True} or {"name": ["value1", "value2"]}
+
+                # Handle lists of values (multiple labels for same group)
+                if isinstance(text, list):
+                    for text_item in text:
+                        # Skip boolean values in lists
+                        if not isinstance(text_item, bool):
+                            label = etree.SubElement(instance, "label")
+                            group_ = etree.SubElement(label, "group")
+                            group_.text = str(group)
+                            text_ = etree.SubElement(label, "text")
+                            text_.text = str(text_item)
+                elif isinstance(text, bool):
                     if not text:
                         raise SerializationError(
                             f"You are not allowed to pass a False value for {group}"
                         )
-
+                    label = etree.SubElement(instance, "label")
                     text_ = etree.SubElement(label, "text")
                     text_.text = group
                 else:
+                    label = etree.SubElement(instance, "label")
                     group_ = etree.SubElement(label, "group")
                     group_.text = str(group)
-
                     text_ = etree.SubElement(label, "text")
                     text_.text = str(text)
 
diff --git a/kloppy/tests/test_xml.py b/kloppy/tests/test_xml.py
index bd663285e..0f464c569 100644
--- a/kloppy/tests/test_xml.py
+++ b/kloppy/tests/test_xml.py
@@ -1,4 +1,5 @@
 from datetime import timedelta
+from dataclasses import replace
 
 from pandas import DataFrame
 from pandas._testing import assert_frame_equal
@@ -126,3 +127,40 @@ def test_correct_serialization(self, base_dir):
 """
         expected_output = bytes(expected_output, "utf-8")
         assert output == expected_output
+
+    def test_serialization_with_multiple_labels_per_group(self, base_dir):
+        dataset = sportscode.load(base_dir / "files/code_xml.xml")
+
+        # Create a modified code with multiple labels for the same group
+        modified_code = replace(
+            dataset.codes[0],
+            labels={
+                "Team": ["Henkie", "Klaas"],
+                "SCORE": ["5-6", "s-1", "s+1"],
+                "Single": "Value",
+            },
+        )
+
+        # Create a new dataset with only the modified code
+        modified_dataset = replace(dataset, records=[modified_code])
+
+        serializer = SportsCodeSerializer()
+        output = serializer.serialize(modified_dataset)
+
+        # Verify the output contains multiple label elements for the same group
+        output_str = output.decode("utf-8")
+
+        # Should have 2 Team labels
+        assert output_str.count("<group>Team</group>") == 2
+        assert "<text>Henkie</text>" in output_str
+        assert "<text>Klaas</text>" in output_str
+
+        # Should have 3 SCORE labels
+        assert output_str.count("<group>SCORE</group>") == 3
+        assert "<text>5-6</text>" in output_str
+        assert "<text>s-1</text>" in output_str
+        assert "<text>s+1</text>" in output_str
+
+        # Should have 1 Single label
+        assert output_str.count("<group>Single</group>") == 1
+        assert "<text>Value</text>" in output_str
diff --git a/kloppy/utils.py b/kloppy/utils.py
index b88a3100a..ef2d514ee 100644
--- a/kloppy/utils.py
+++ b/kloppy/utils.py
@@ -30,7 +30,7 @@ def performance_logging(
         took = (time.time() - start) * 1000
         extra = ""
         if counter is not None:
-            extra = f" ({int(counter / took * 1000)}items/sec)"
+            extra = f" ({counter / took * 1000:.1f}items/sec)"
 
         unit = "ms"
         if took < 0.1: